Skin, hide and leather working machine



March 1, 1938. F. WAYLAND SKIN, HIDE AND LEATHER WORKING MACHINE FiledJuly 51, 1937 3 Sheets-Sheet 1 mm n 3 Sheets-Sheet 2 l mid- Eur March 1,1938. F. WAYLAND SKIN, HIDE AND LEATl iER WORKING MACHINE Filed July 51,1951 Fig.2.

March 1, 1938.

F. WAYLAND sKIN, HIDE AND LEATHER WORKING MACHINE Filed July 31, 1937 3Sheets-Sheet 3 a ./l/ J D w I I, 7 1.. /I/, 1 u a J I? W .Wn v UV,

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l m? E a a stretch-of the belt 2|.

Patented Mar. 1, 1938 SKIN, 1mm AND LEATHER WORKING MACHINE FrankWayland, Camden. N. .1.

Application July 31, 1937, Serial No. 156,709

7 Claims.

This invention relates to machines for putting out, staking, fieshingand unhairing skins, hides and leather and consists in certainimprovements upon the machines of this class which are illustrated anddescribed in my U. S. Letters Patent Nos. 1,077,207; 1,090,895;1,131,756 and 1,204,914.

In the accompanying drawings which illustrate one embodiment of theinvention,

Figure 1 is a front elevation of a machine embodying the invention.

Figure 2 is a side elevation, partly in section, of the machine shown inFig. 1.

Figure 3 is a section on line 3'-3 of Fig. 1.

Figure 4 is a detail hereinafter described.

The illustrated embodiment of the invention comprises a pair of coact ing feed rolls Hi and II arranged between a pair of spaced apart uprightsi2, i2 fixedly mounted upon a base l3, said uprights and base formingthe main frame of the machine. Also disposed between the uprights l2, l2just below the feed rolls is a pair of bladed work-rolls l4 and I5 whichare constructed and cooperate with one another as shown and described inmy Patents Nos. 1,077,207 and 1,204,914 but which co-act with the feedrolls l0 and II in the novel fashion presently tobe described.

The rear feed roll is fast on a shaft l6 journaled in bearings onuprights l2, l2 and on one end of this shaft is fixed a finder gear H asshown in Fig. 2, while on the opposite end thereof are mounted threepulleys l8, I9 and 20 disposed side-by-side as'shown in Fig. 1, theintermediate pulley i9 being fast on shaft l6 and the two endmostpulleys l8 and 20 being loosely mounted thereon. Co-operativelyassociated with pulleys i9 and 20 is a straight driving belt 2| andcooperatively associated with pulleys l8 and I9 is a crossed drivingbelt 22. The portions of these belts which engage the pulleys arecontinously driven in opposite directions as indicated by the arrows inFig. 1 and are spaced apart a distance slightly greater than the widthof the intermediate pulley I9.

Slidably mounted in bearings provided at the tops of the uprights l2, l2of the frame is a manually operated shipper member 23 in the'form of atransversely disposed endwise movable slidebar carrying a pair oflaterally extending arms 24 which embrace a stretch of the belt 22 andalso a pair of laterally extending arms 25 which embrace It will thus beclear that the shipper member 23 can be adjusted endwise so as to placebelt 2| on tight pulley I9 and belt 22 on loose pulley l8 to drive shaftIS in one direction as shown in Fig. 1; so as to place belt 2|. on

loose pulley 20 and belt 22 onyloose pulley 18 to stop the rotation ofshaft l8, or so as to place the belt 22 on tight pulley l2 and belt 2|on loose pulley 20 to driv'e'shaft It in the opposite direction, all atthe will of the operator. Stop pins 26 carried bythe shipper memberengage the up-, rights l2, l2 to limit the endwise movement of saidmember in each direction.

The rear work roll I is fixed on a shaft 21 supported, as usual,in'journal boxes adiustably mounted on theuprights l2, l2. This shafthas fixed on it a pulley 22, Figs. 1 and 2, that is con? a belt indiated by broken lines at 22.

The front work roll I! is fast on a shaft 30 journaled near its oppositeends in bearings .provided on a pair of swinging arms 2|, 2|, pivotallysupported at their lower ends by a rock shaft 32 journaled in bearingson the uprights I2, l2. Each swinging arm Ills connected by a pitman 23with an eccentric 24 fast on a shaft 25.

The shaft 21 of the rear work roll has fast on it agear 26 operatingthrough the usual intermediate gears 21 to drive a gear 22 faston theshaft 30 of the front work roll l5. V

The shaft 25 has loosely mounted on it a gear 39 that is continuouslydriven by a pinion 40 fast on a shaft 4|. This shaft also has fixed onit a pulley 42 that is continuously driven by a belt, the latter beingindicated by dotted lines at 43 in Fig.1.

The front feed roll H is fast on a shaft 44 which is mounted as usual;upon the upper ends of the swinging arms 2| and at one end thereof saidshaft has fixed on it a finder gear 45 to co operate with the findergear II on the shaft ii of the rear feed roll.

When the swinging feed roll frame or carrier comprising the arm's 3| androck shaft :2 00011- I pies the full line position shown in the drawingsthe gears H and 4 5 are in mesh and if either belt 2| or 22 is on thetight pulley I! the two feed rolls are rotated in unison, in thedirections indicated by the arrows in Fig. 3 if belt 2| is on the tightpulley and inopposite directions if the belt 22 is on said pulley.

When the swinging frame or carrier 3|-22 occupies the position indicatedby broken lines in Fig. 3 the gear is out of mesh with the gear l1 eratewith a clutch-operating member 56 that is pivotally mounted at 5i on theadjacent upright If. This member 58 is in the form of a bell-crank leverwhereof one-arm normally rests by gravity upon the clutch member, in thepath of the studs 48 and 46 and is formed wlth a cam surface and stopshoulder to cooperate in the usual manner with said studs.

The other arm of the clutch operating member 56 is co-operativelyassociated with one arm of a bell-crank lever 52 fulcrumed at 53 on theadjacent upright l2. At its front free end the horizontal arm of thelever 52' is connected with one end of a horizontal cross-bar 54 whoseopposite end is connected with the front free end of a horizontal arm 55whose rear end is pivotally mounted at 56 on the other upright l2. Thetwo pivots or fulcrums 56 and 53 are axially aligned. As will be clear,the lever 52, cross-bar 54 and arm 55 make up a foot-operated treadlethrough which the operator controls the clutchoperating member 58 andclutch member 46. A spring 51 normally holds this treadle elevatedagainst the hubs of the swinging arms 3| but when depressed by theoperator the treadle acts to swing member 50 out of engagement withclutch member 46 whereupon spring 41 shifts the latter into engagementwith the clutch member on gear 38 with the result that said shaft isretated and will continue to be rotated so long as the treadle is helddown by the operator.

When the operator releases the treadle the latter is restored to itsnormal position by spring 51 which permits member 50 to fall on toclutch member 46 in front of 'an approaching stud 48 or 49. When thestud reaches the member 50 it rides against the cam portion thereof andthe latter acts through the stud to disengage clutch member 46 from gear39 thereby stopping the rotation of shaft and eccentrics 34.

The studs 48 and 49 are positioned relatively to the eccentrics so thatthe swinging carrier 3I82 can be stopped and held either at the limit ofits movement toward the rear work roll i4 or at the limit of itsmovement away from said roll and with the above described feed rollmechanism it is possible to introduce the skin, hide or leather into themachine while said carrier occupies either of said two extremepositions. Heretofore the feed rolls of machines of this swinging frameor carrier type have always been rotated only in the directionsindicated by the arrows in Fig. 3 and no provision has ever been madefor reversing their direction of rotation or for driving them in theopposite direction so as to feed the'material into the machine. Nor hasit been possible heretofore to introduce, operate upon and remove theskin, hide or leather while the swinging frame or carrier 3l--32 oc-.,

cupied its closed position shown by full lines in Fig. 3.

Fixedly attached to the upper ends of the arms 8| is a 'table 58 uponwhich the skin, hide, leather or the like, X is placed, flattened outand slid forward to and between the feed rolls l5 and ll while thecarrier or swinging frame "-82 occupies either its open or its closedposition;

It will be clear that at any time during the operation of the machinethe material X can be quickly released and the action of the rollsthereon'terminated by depression of the treadle 52- 54-56 which resultsin movement of carrier 8i-32 from the full line position of Fig. 3 tothe position indicated by dotted lines. Also, that a second depressionof the treadle restores the carrier 3l-82 to the full line positionagain.

Therefore, in operating the present machine to stake dry or semi-dryleather the latter may be fed into the machine to a predetermined ordesired extent with the swinging frame on carrier 8l-42 in closedposition and then the removal of the leather may be effected by openingmovement of said swinging frame. This mode of operation avoids theformation of wrinkles in the leather.

Directly below the work rolls l4 and I5, I pro-' vide a pair ofstretching'and tensioning rolls 5! and 56, the former having a covering58 of resilient rubber and the latter being constructed with spiralmetallic blades as shown in Figs. 1 and 3. Like the blades of the workroll l5 the blades of roll 58 are made in right and left hand directionsas shown in Fig. 1, said right and left hand blades meeting at thevertical median plane of the machine.

The roll 51 is provided at its opposite ends with trunnions 66 journaledin bearings provided on the uprights I! of the main frame whiletrunnions 68 provided at the opposite ends of the front roll 58 arejournaled in bearings provided on the swinging arms 3i.

These two rolls 51 and 58 are adapted to engage opposite sides of theskin, hide or leather X as the latter is moved up and down by the feedrolls l6 and H and while the work rolls I4 and 15 are operating upon theopposite sides of the same. It will thus be clear that the portion ofthe skin, hide or leather between the rolls 51 and 58 of the feed rollsiii-ll is maintained under longitudinal tension while being operatedupon by the work rolls l4 and i5.

The front bladed roll 58 carries a sprocket wheel 6| connected by asprocket chain 62 with a sprocket wheel 63 fast on the shaft 36 of thefront work roll i5 so that said frontroll 58 is continuously driven inthe direction of the arrow, Fig. 3. The rear roll 51 is connected withand driven by the shaft 21 of the rear work roll i4 through similarmechanism including the sprocket chain 64 shown in Fig. 3. Thus the twolower rolls 51 and 58 are continuously driven in the directionsindicated by the arrows in Fig. 3 and their peripheral speeds are noless, and preferably somewhat greater than, the peripheral speeds of thework rolls l4 and I5.

Thus during the operation of the machine the lower stretch of the skin,hide or leather between the work rolls l4l5 and the lower rolls 51-58 ismaintained stretched taut longitudinally and also, through the action ofthe spiral blades of roll 58 said lower portion of the skin, hide orleather is stretched laterally in opposite directions from the middle ofthe machine. In this way the lower portion of the work is maintainedperfectly flat and stretched in all directions at all times butparticularly during the upward movement of the work while said lowerportion of the latter is approaching and passing between the work rollsi4 and II.

The above described machine is of simple and eflicient construction andhas the advantage that What I claim is:

' above described.

it not only can be operated as machines of this class have heretoforebeen used but may be controlled so as to have the new mode of operationIn putting out wet skins the leather or hide is introduced between therolls while the swinging frame or carrier occupies its open position,

and then after closing the frame or carrier the leather is feddownwardly as far as possible by the feed rolls whereupon the directionof rotation of the feed rolls is reversed to bring the leather or hideback up again and the foot treadle is then operated to open the feedrolls and free the same. 4,

Y 1. In amachine of the character described, the combination of a pairof opposed spirally bladed work rolls for simultaneously engaging theopposite sides of the sheet material that is operated upon; means forcontinuously rotating said rolls to cause the same to scrape saidmaterial and also to stretch the same longitudinally and transversely; apair of opposed feed rolls disposed above and adjacent to said workrolls so as to co-act with the latter in stretching the materiallongitudinally; a main frame on which one roll of each of said two pairsis journaled; a swinging carrier frame pivotally supported by said mainframe and on which'the other rolls of said two pairs or rolls arerotatably mounted; mecha-.

nism for driving said feed rolls to feed the material into the machinetoward and between said work rolls at a slower speed than the peripheralspeed of said work rolls, and mechanism for swinging said carrier framein a direction to re-. lease the material from both pairs of rolls whensaid material has been fed into the machine a predetermined distance.

2. In a machine of the character described, the combination of a pair ofopposed spirally bladed work rolls for simultaneously engaging theopposite sides of the sheet material that is operated upon; means forcontinuously rotating said rolls to cause the same to scrape saidmaterial and also to stretch the same longitudinally and transversely; apair of opposed feed rolls disposed above and adjacent to said workrolls so as to coact with the latter in stretching the materiallongitudinally; mechanism for driving said feed rolls to effect movementof the material toward and between said work rolls; mechanism fordriving said feed rolls to effect movement of the material between saidwork rolls in the opposite direction; means for selectively controllingsaid two driving mechanisms to render either effective to the exclusionof the other; a stationary main frame on which one roll of each of saidtwo pairs of rolls is journaled; a swinging carrier frame pivotallysupported by said main frame and on which the other rolls of said twopairs of rolls are rotatably mounted; manually controlled means forswinging said carrier frame to shift the rolls carried thereby into andout of cooperative relationship with the other rolls of the machine andfor holding said swinging carrier stationary while at the limit of itsmovement in each direction.

3. In a machine of the character described the combination of a pair ofopposed bladed work rolls for simultaneously engaging the opposite sidesof the sheet material that is operated upon;

1y; mechanism for driving said feed rolls to effect movement of thematerial toward and between said work rolls; mechanism for driving saidfeed rolls to efliect movement of the material between said work rollsin the opposite direction: means for selectively controlling said twodriving mechanisms to render either efiective to the exclusion of theother; a pair of opposed tensioning rolls disposed below said work rollsso as to engage the opposite sides of that portion of the sheet materialextending below the latter, and means for rotating said tensioning rollsin directions opposed to the upward movement of the sheet material.

4. A machine of the character described constructed in accordance withclaim 3 and wherein there is provided a main frame on which one roll ofeach of said three pairs of rolls is journalled; a swinging support forthe other rolls of said three pairs; manually controlled means forswinging said support to shift the rolls carried thereby into and out ofco-operative relationship with the other rolls of the machine, and forholding said support at the limit of its movement in each direction.

5. A machine of the character described constructed in accordance withclaim 3 wherein one of said tensioning rolls is made with right hand andleft hand spiral blades to co-operate with the opposite tensioning rollto stretch the sheet material laterally in opposite-directions from itsmiddle.

6. A machine of the character described consioning rolls being made withopposed spiral, blades for stretching the'material laterally in oppositedirections from its middle.

7. In a machine of the character described the combination with a pairof opposed bladed work rolls for simultaneously engaging the oppositesides ofthe sheet material that is operated upon and means forcontinuously rotating said rolls to cause the same to scrape saidmaterial and also to stretch the same longitudinally and transversely,of a pair of opposed feed rolls disposed above and adjacent to said workrolls so as to co-act with the latter in stretching the materiallongitudinally; mechanism for driving one of said feed rolls to effectmovement of the material between said work rolls in one direction;mechanism for driving one of said feed rolls to effect movement of thematerial between said.

nisms to render either eflective to the exclusion of the other; a pairof tensioning rolls disposed below said work rolls; means forcontinuously rotating said tensioning rolls; a swinging frame on whichone of said feed rolls, one of said work rolls and one of saidtensioning' rolls are mounted, and means controlled by the operator forshifting said swinging support to move the three rolls carried therebyinto and out of operative positions, one of said tensioning rolls beingmade with opposed spiral blades for stretching the material laterally inopposite directions from its middle as said material is moved up anddown 5 between said work rolls.

- FRANK WAYLAND.

